<template>
  <view v-if="goods_info.goods_name" class="goods-info-container">
    <!-- 轮播图区域 -->
    <swiper circular="true"  :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="privew(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods_info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods_name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="17"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <view class="yf">快递：免运费</view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import { mapState, mapMutations, mapGetters} from 'vuex'
  export default {
  computed: {
    ...mapState('m_cart',[]),
    ...mapGetters('m_cart',['total'])
  },
  watch: {
    total:{
     handler (newVal) {
       const findResults = this.options.find(x => x.text === '购物车')
       if (findResults) {
         findResults.info = newVal
       }
      },
      immediate: true
    }
  },
    data() {
      return {
        goods_info: {},
        options: [{
                    icon: 'shop',
                    text: '店铺',
                    infoBackgroundColor:'#007aff',
                    infoColor:"red"
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 0
                }],
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }
                ]
      };
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods:{
     async getGoodsDetail(goods_id) {
      const {data: res} = await uni.$http.get('/api/public/v1/goods/detail?goods_id=' + goods_id)
      if(res.meta.status !== 200) return uni.$showMsg()
      
      res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display: block;"').replace(/webp/g, 'jpg')
      this.goods_info = res.message
      },
      privew(i) {
        uni.previewImage({
          current:i,
          urls:this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e) {
        if(e.content.text === "购物车") {
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      ...mapMutations('m_cart', ['addToCart']),
      buttonClick(e) {
        if(e.content.text === '加入购物车') {
           // { goods_id, goods_name, goods_price, goods_count, goods_small_logo, goods_state }
          const goods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_state: true
          }
          // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image {
    width: 100%;
    height: 100%;
  }
}
.goods_info-box {
  margin: 15px 10px;
  margin-right: 0;
  .price {
    margin: 10px 0;
    font-size: 17px;
    color: #C00000;
  }
  .goods-info-body {
    display: flex;
    .goods_name {
      margin-right: 10px;
      font-size: 13px;
    }
    .favi {
      width: 120px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      font-size: 12px;
      color: gray;
    }
  }
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}
.goods_nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-info-container {
  padding-bottom: 50px;
}
</style>
